Perpetual calendar



G. S. VIVIAN.

PERPETUAL GALENDAR.

APPLICATION HLED JULY 3,1922.

Patented Oct mawm,

' 2 SHEETS SHEET 1.

msasma G. S. VIVIAN.

PERPETUAL CALENDAR.

APPLLCATION FILED JULY 3, 1922.

Patented Oct. 17, 1922.

2 SHEETS-SHEET 2.

Patented @et. 1?, E9220 PERPETUAL CALENDAR.

Application filed July 3, 1922.

To aZ-Z whom. it may concern Be it, known that I, GEORGE S'rnwnn'r Vivian, subject of the King oi? Great Britain and Ireland, residing at Olovelly, The Vale, Golders Green, London, England, have invented a new and useful Perpetual Galendar, of which the following is a specification,

This invention relates to improvementsin perpetual calendars of the kind comprising a casing provided with rollers on which are wound sheets or strips carrying the date indications, the figuring being brought to the required'positions to indicate the date by rotation of the rollers.

The object of the present invention consists in an improved and simplified construction of apparatus of this type which will be easy to manipulate and which enables the date at any given time to be read off expeditiously.

According to the invention, the apparatus comprises an enclosing casing in Which are mounted a series of rollers located parallel with one another and each which is provided with a series of windows at appropriate points which co-operate with the markings on the first sheet or strip and with a series of markings constituting the days of the week, the latter markings being mounted at one side of the casing and secured to or printed on a stationary portion of the device. I

The numerical markings on the date sheet are arranged so that the first numeral of the series may be brought opposite to any of the days of a week on the stationary indicator the remaining numerals being lo cated in rows in the proper sequence as is usual with calendars, whilst the transparent sheet or strip is provided with windows arranged in two sets, onejoi the sets registering with the markings of the stationary indicator and the other windows co-operat- Serial No. 572,4'2'9.

ing with the numerals in each or the columns or the movable numerical indicator, so that by intermittent movement of the transparent sheet, in one direction the successive days of the weeks and day in the month can be correctly indicated and seen at a glance.

The date sheet is preferably niountod on a stationary block or carrier fixed within the casing and provided at its upper and lower ends with rounded guides or rollers over which said sheet passes, whilst the transparent apertured sheet is carried by rollers at or towards the top and bottom of the casing the said sheet being located between the front stretch of the date sheet and the glazed front of the casing, and the transparent sheet is adapted to be wound onto one of the rollers and off the other according to which is rotated. By this means th'eapertured transparent sheet may be moved in front of both the stationary strip giving the days 01" the week and the date strip which is itseli movable.

Suitable means are provided for maintaining the movable sheets strips in the stretched positions as will be hereinafter more fully described.

In order that the invention may be readily understood reference is made to the accordpanying drawings which show a calendar constructed according to my invention.

Figure 1 is a front elevation.

Figure 2 is a side elevation.

Figure 3 is a rear'view showing the back i' the casing partly opened.

Figure 4 is a vertical section with the back of the casing removed.

Figure 5 is a rear view and Figure 6 a side view of the carrier for the sheet or strip carrying the numerical indications removed trom the casing.

Figure 7 is a rear view of the transparent sheet or strip and the rollers carrying the same both removed from the casing, and

Figure 8 is a perspective view of the ean rier iior the month indicating cards.

The apparatus comprises an outer substantially rectangular enclosing casing 10, the rear of which is closed by a slidable plate 11 having pivoted thereto a strut 12 termed of wire or other material by means f hich the casing may be made to stand sheet ing curved rearwardly and inwardly at 15,

on a table or other surface as shown in Figure 2. The front of the casing is provided with a glass window 13, at the back of which and to one side is mounted the stationary indicator 9 for the days of a week, such as Sunday, Monday, Tuesday and on arranged in a vertical column.

li fountedcentrally within the casing is a carrier preferably formed from wood or metal, the upper and lower edges beand 16, whilst when the carrier is formed from sheet metal, the sides are bent rearwardly at right angles to snugly fit between the sides of the casing 10.

Mounted centrally on the carrier is a roller or rod 19 which extends through side walls of the casing, one end of the roller having an operating'knob'or the like 20. 21 is a sheet or strip formed of flexible material, on the front of which are printed in columns the numerical indications of the days of the month, the first column having the numbers 1 to 7 the second column having the numbers 2 to'14 of whichthe numbers 8 to 14 inclusive come opposite to the numbers 1 to 7 inclusive of the first column, the third column having the numbers 9 to 21 located opposite to the numbers 8 to 14 in the second column, the fourth column having the numbers 16 to 28 arranged relatively in a similar manner, whilst the fifth column has the numerals 23 to 31 located opposite'to the numerals 16 to 24 of the fourth column. The sixth column contains the numerals 30 and 31 respectively located opposite to the numerals 23 and 24 of the fifth column. The upper and lower portions of the glass front of the casing are covered by strips 22 and 23 of opaque material so spaced apart that only a maximum of seven figures in any column is visible.

Attached at each end to rollers or rods 24,-

25 respectivelyis a sheet or strip 26 of transparent or semi-transparent material, and this strip is provided along one side with a series of windows spaced apart in the manner hereinafter described. The transparent strip 26 passes across the front of both the stationary indicator 9 and the sheet or strip 21 with the numerical markings. The portion of the strip 26 which passes over the indicator 9 is provided with windows 27, and these windows are spaced apart on the strip 26 so that only one of them can be visible at any one time from the front of the casing. Opposite the windows 27 are a further series of windows similarly formed and indicated at 28, and these windows 28 are offset with respect to one another in a transverse direction, the distance horizontally between any two adjacent windows 28 of the series corresponding to the distance between the vertical columns of figures on the indicator strip 21.

The rods or rollers 24 and 25 are each extended through the casing 10 and each is provided with a knob or button 30.

These knobs or buttons and also the knob or the like 20 on the end of the rod or roller 19 are constructed in the following manner. The ends of the rods are provided with a recess around the periphery of which is formed two tongues or the like located at diametrically opposite points. The knob proper is provided on its inner, side with a recess of a size to snugly fit onto the end of the rod, and the bottom of this recess is provided with an inwardly extending flange or lip 31 I provided with diametrically oppositely disposed holes into which the tongues on the end of the rod project so that when the knob is in position the rod is'locked thereto and rotates therewith. "The knob is thus secured in position by a' screw 82 the head of which takes its seating on theinner periphery of the flange within theknolo and screws into a screw threaded recess in the end of the rod. The head of the" screw'32 is thus located within a recess 33 on the outer side of the knob, which recess closed by'a screw-threaded plug 30 I i The rod 19 by means of which the date sheet or strip21 is manipulated, carries two rollers or the like 34, each provided on its periphery with a rubber covering which is preferably corrugated or roughened in any suitable manner. date sheet 21 is resiliently pressed outwardly towards the rollers 34 by means of a springy plate 36, the upper and lower edges of which are secured to the carrier 14 as shown in Figures 4 and 6, so that the portion of, the plate 36 between its upper and lower edges is normally curved where it passes the rollers and thus frictionally holds the rear stretch The rear str'etch'fof the i of the date strip into driving contact therewith.

The outer face of the rear stretch of the date strip is'also supported by. a springy plate 87, Figures 4, 5 and 6, the central portion of which is provided with upstanding lugs 38 which are threaded onto the rod 19 and serve as distance pieces between the rollers 34, the upper and lower edges of the plate 37 resiliently pressing the rear stretch of the date strip towards theo'curvedportions 15 and 16 respectively ofthe carrier 14 as shown clearly in Figure 6.

The ends of the transparent apertured strip 26 may be secured to the rollers or rods 24, 25 respectively in any appropriatemanner, but in the preferred construction the ends of the rollers are provided with roughened surfaces or grooves as at 40, 40 and after passlng the end of the transparent strip round said roller, clips 41 are attached" which are formed of springy steel and eX- tend round the rods to substantially three quarters of its circumference so that the strip is 'firmlyseeured to the rods and will not readily become detached therefrom if either of the rollers 24, 25 are unnecessarily turned beyond the predetermined limits.

The carrier 14, and the rods 19, 24 and'25 are preferably mountedin side members 42, 42 which are fixed to the inner longitudinal side walls of the casing 10 by screws 43.

The upperends of these strips are adapted to form a support for a hinged or removable carrier 45, which is provided on its front face with a receptive chamber 46, open at its front'toreceive one or more removable and preferably reversible cards markedwith the months of the year, one of said cards being shown at 47. The open front of the carrier normally lies against the glass front 13, and is shaped at its top to form a pair of bent springy tongues 48 which when the sliding back 11 is slidden into position engage the inner surface of said back and is thereby retained in the proper position. By this means whenthe month is to be altered, it is merely necessary to slightly open the back as shown in Figure 3, and by tilting or swingingthe carrier 45 rearwardly the fore-- most card may be reversed or changed as desired to bring the proper card into position when the back'is again closed.

The apparatus operates as follows The transparent strip or sheet 26 is first wound completely onto the roller 24. The roller 19 is then rotated to bring the numeral 1"immediately opposite the particu lar day of the week on which the first day of the particular month falls. The calendar is now set for the month. The roller 25 is then rotated to bring the first window of the series 'marked 27 to render the particular indication of the dayin the indicator 9 visible whilst the window 28 opposite to this window 27 will come opposite to the figure indicating the day of the month. The transparent sheet 26 is subsequently moved forwardly through the distance of one figure for each day and'by this means the oo-operatingwindows 27 and 28 will in each case successively indicate both the day of the week and the day of the month throughout the entire month,'it being merely necessary to set the indicator strip 21 and to return the transparent strip'26 to the roller 24 at the end of each month.

' The calendar can thus be set 'for any month in any year to give the correct indication of the date. Furthermore the day of the week and the day of the 'month are distinctly markedor lined out by the registering windows 27 and 28 so that the date can be easily and quickly read oft'even at a distance.

I claim 1. A perpetual calendar of the kindset forth, comprising an endless movable band mounted on a carrier fixed within an outer stationary casing and having indications thereon of the days of the month arranged in columns, means for moving said band on said carrier, a transparent strip mounted between said band and the front of the easing, rollers supporting said strip, markings on said strip cooperating with said band, means for operating each of said rollers supporting said strip independently, and a stationary indicator within the casing and marked to represent days of a complete week, for the purposes set forth.

2. A perpetual calendar, comprising a casing, a stationary indicator provided with markings representing the days of the week, a carrier, a movable endless band mounted on said carrier and having markings arranged in columns'representing the days of the month, a roller for moving said band on its carrier, means for rotating said roller, a transparent strip mounted movably between said stationary indicator and movable band and the front of the casing, a pair of rollers on which said strip is supported, means for rotating said rollers independently, and a movable carrier within said casing adapted for the reception of a card indicating the month of the year, for the purposes set forth.

3. A perpetual calendar, comprising a casing, a stationary indicator provided with markings representing the days of the week, a carrier, a movable endless band mounted on said carrier and having markings arranged in columns representing the days of the month, a roller for moving said band on its carrier, means for rotating said roller, a transparent strip mounted movably-between said stationary indicator and movable band and the front of the casing, a pair of rollers on which opposite ends of said transparent strip may be wound and unwound, and means for rotating said rollers independently.

4. A perpetual calendar comprising a casing, a stationary indicator provided with markings representing the days of the week, a carrier, a movable endless band mounted on said carrier and having numerical indications thereon in columns representing the days of the month, means for moving said band, transparent strip mounted on a pair of rollers supported for rotation .in said casing, apertures in said strip co-operating with the markings on the stationary indicator and the numerals on said movable band, and means for moving said strip by means of said rollers, for the purposes set forth.

5. A perpetual calendar comprising a casing. a stationary indicator provided with markings representing the days of a week, a carrier fixed within saidcasing, a movable endless band mounted on said carrier, and having markings therein arranged in column formation and representing the days of the month, means for moving said band, atransparent strip mounted between said indicator and movable band on the one hand and the front of the casing on the other hand, a pair of rollers mounted in said casing onto which the ends of the strip may be wound and unwound, and means for rotating each of said rollers independently, for the purposes set forth.

.6. A perpetual calendar comprising a casing, a stationary carrier fixed within said casing,a stationary indicator mounted on one side of said carrier and provided with markings representing the days of the week, a movable endless band mounted on the other side of said carrier and provided with numerical, markings representing the days of the month, means for moving said band, a transparent strip locatedbetween said indicator and endless band on the one hand and the front of the casing on the other hand, rollers adapted to support each end of said strip, and means for independently rotating'said rollers to wind one end of strip onto one roller and the opposite end of said strip off the other roller, for the purposes set forth.

7. A perpetual calendar comprising a casing, a stationary carrier fixed within said casing, a stationary indicator mounted on one side of said carrier and provided with markings representing the days of the week, a movable endless band mounted on the other side of said carrier and provided with numerical markings representing the days of the month, means for moving said band, a transparent strip located between'said indicator and endless band on the one hand and the front of the casing on the other hand, windows in said strip arranged in sets, one set of windows cooperating with the markings in the stationary indicator and the other set of windows co-operating with the markings on the endless band, means for supporting the ends of'said strip and means for moving the same with rela-- tion to the stationary indicator.

8. A perpetual calendar comprising a casing, a stationary carrier fixed within said casing, a stationary indicator mounted on one side of said carrier and provided with markings representing the days of the week, a movable endless band mounted on the other side of said carrier and provided with numerical markings representing the days of the month, means for moving said band, a transparent strip located between said indicator and endless band on the one hand and the front of the casing on the other hand, windows in said strip arranged in sets, one set of windows co-operating with the markings in the stationary indicator and spaced apart in column formation, and the other set of windows cooperating with the markings on the endless band and spaced apart and laterally displaced with respect'to one another, means for supporting the said strip, and means for moving the samewith relation to both the stationary indicator and the endless band;

, 9. A perpetual calendar comprising a casing, a stationary carrier fixed within said casing, a stationary indicator mounted on one side of said carrierand provided with markings representing the days of the week, a movable endless band mounted on the other side of said carrier and provided with numerical markings representing days of the month, means for moving said band, a transparent strip located between said indicator and endless band on one hand and the front of the casing. on the other hand, rollers mounted rotatably in said casing around which the ends of said strip are wound, means for securing the ends of the strip to said rollers, and means for operating each of said rollers independently to move the strip with relation to the stationary indicator, for the purposes set forth. I 1

. 10. A. perpetual calendar of the ,kind set forth, comprising a casing, a stationary indicator mounted within said casing and having markings representing thedays of the week, a carrier within said casin a movable endless band mounted on sai carrier and adjacent said indicator, a roller. rotatably mounted in said casing, means for resiliently pressing the rear stretch of said endless band into driving engagement with said roller, means for rotating said roller, markings on said endless band indicating the days of the month, atransparent strip mounted movably between said indicatorv and band on the one hand and the front of the casing on the other hand,'rol1ersfor supporting said strip and means for rotating each of said rollers independently to move said strip, for the purposes set forth.

11. A perpetual calendar of the kind set forth, comprising an outer casing, a carrier mounted within said casing, a stationary indicator having markings thereon representing the days of the week, a movable endless band mounted on said carrier and having markings arranged in columns and representing numerically the days of the month, a roller mounted rotatably towards the centre of said carrier, means for pressing said endless band into driving engagement with said roller, a pair of rollers mounted in said casing, a transparent apertured strip movably mounted between said indicator and band on the one hand and the front of the casing on the other hand, and supported by said rollers, means for rotating said rollers independently and a carrier at the top of the casing having a receptive chamber for removable cards marked to indicate the months of the year, for the urposes set forth.

GEO GE STEWART VIVIAN. 

